William a



(No Model.)

W. A. MQGUIRE & M. G. HUBBARD, Jr. GAB BRAKE.

' No. 585,223. Patented June 29,1897.

rrIcE.

WILLIAM A; MCGUIRE AND MOSES G. HUBBARD, JR., OF CHICAGO, ILLINOIS, ASSIGNORS TO THE MCGUIRE MANUFACTURING COMPANY, OF SAME PLACE.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent NO. 585,223, dated June 29, 1897.

Application filed 111118 6, 1895. Serial No. 551,839. (No model.)

b To all whom at may concern:

Be it known that we, WILLIAM A. MoGUIRE and MOSES G. HUBBARD, Jr., citizens of the United States, and residents of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Car-Brakes, of which the following is a specification, reference being had to the accompanying drawings, in

. which- Figure 1 is a view of one of the wheels of a car with the brake appliances attached.

Fig. 2 is an enlarged detail, being a vertical cross-section through the brake-beam, show- I 5 ing the actuating-arm. Fig. 3 is an enlarged detail, being a view of the devices shown in Fig. 2, seen from the 1eft-hand side of said figure. Fig. 4 is an enlarged detail, being a view of the trunnioned sleeve.

Our invention relates to car-brakes. Heretofore in car-brakes it has been usual to take up wear of the brake-shoes by means of turnbuckles or equivalent devices placed upon the-brake-rods connecting such brake-shoes. It has been found, however, in practice that the threads on the rods outside of the turnbuckles become filled with mud and dirt, which, especially in street-railways, with the salt used in the tracks, causes the thread to rust and prevents the turnbuckles being operated so as to take up the wear of the brakeshoes. At the same time the threads in the turnbuckle become so Worn from the sagging and vibration of the rods as to render them inoperative.

It is the object of our invention to overcome these defects and to provide a newand improved method of connecting the brakerods to the brake-beams whereby the wear upon the brake-shoes may be readily taken up. This object we accomplish as hereinafter specified and as illustrated in the drawings.

That which we regard as new will be set forth in the claims.

In the drawings, 1 indicates a portion of the wheel-supporting frame of the car.

2 indicates a wheel.

3 indicates a brakeshoe secured in any appropriate manner to a brake-beam t and suspended in the usual manner by links 5 from the wheel-frame 1.

6 indicates a spring secured at its upper end to the wheel-frame and bearing at its lower end upon the brake-beam 4, operating to force the brake shoe 3 away from the wheel.

7 indicates an arm which is mounted by means of a squared opening in its upper portion upon the brake-beam 4E. The arm 7, at a suitable point below said squared opening, is provided with a recess 8, semicircular in shape and open upon the side away from the wheel, as best shown by dotted lines in Fig. 2, in order to form a bearing for the trunnions upon the sleeve, hereinafter described. The arm 7 is provided with a circular opening, (see Fig. 39,) through which the sleeve, hereinafter described, passes.

As shown in Fig. 1, the arm or lever 7 is in effect a continuation of the brake-lever 14:, which projects above the beam at, as both are rigidly connected to said beam. It is obvious that they may be in line with each other or may not, as the operation would be the same in either case.

10 indicates a sleeve which passes through the opening 9 in the arm 7 and is provided with trunnions 11, which when the sleeve is in place rest within and bear upon the recess 8 in the arm 7.

It will be observed that by means of the laterally-projecting trunnions 11 the sleeve 10 is trunnioned in the lower part of the arm or lever 7 in such manner as to be capable of rocking in a vertical plane.

12 indicates a brake rod which passes through the sleeve 10 and extends a suitable distance outside of the same. The brake-rod 12 is screw-threaded at its outer end and is provided with a nut 13, which is adapted to bear upon the outer end of the sleeve 10. By adjusting the nut 13 upon the thread it is obvious that the wear upon the brake-shoes through use may be taken up from time to time as may be desired.

The rods 12 are connected with any appropriate brake mechanism, and it is obvious that when such mechanism is operated the rods 12 will be moved in such a way as to swing the brake-beam & and with it the shoe 3 against the wheel, the trunnions of the sleeve 10 forming a pivoted bearin g, which prevents any wrenching orbending of the rods which might otherwise occur from the swinging of the brake forward and backward.

That which we claim as our invention, and desire to secure by Letters Patent, is

1. In a car-brake, the combination with a brakebeam, of an arm secured to said brakebeam, a sleeve trunnioned on said arm, and a brake-rod adapted to pass through said sleeve, substantially as described.

2. The combination with a brake-beam, of an arm secured to said brake-beam, aslecve trunnioned upon said arm, a brake-rod passing through said sleeve and screw-threaded upon its outer end, and a nut adapted to bear upon the outer end of said sleeve, substantially as described.

3. The combination with a brake-beam, and an arm secured to said brake-beam and provided with a transverse recess and a circular opcning,of a sleeve passing through said opening and provided with trunnions adapted to bear in said recess, a brake rod passing through said sleeve and screw-threaded upon its outer end, and a nut adapted to bear upon the outer end of said sleeve, substantially as described.

4. In a ear-brake, the combination of one or more brake -1evers connected with the brake-shoes, sleeves trunnioned on said levers, and brake connecting rods passing through said sleeves, and adapted to be operated to set the brake or brakes, substantially as set forth.

5. I11 a car-brake, the combination with a brake-shoe and brake-lever, of a sleeve trunnioned on said lever and adapted to rock in a vertical plane, and a brake rod passed through said sleeve and ad justably connected therewith, said rod being adapted to be 0perated to set the brake, substantially as described.

G. In abrake, the combination with abrakeshoe, and brake-lever, of a sleeve adapted to rock in a vertical plane, and a brake-rod connected to said sleeve, and adapted to move in a vertical plane with said sleeve, substantially as described.

\VILLIAM A. MCGUIRE. MOSES G. HUBBARD, JR. \Yitnesses:

JOHN L. JACKSON, A. 1-1. ADAMS. 

